gExercise 3: Suppose average pizza delivery times are normally distributed withan unknown population mean and a population standard deviation of sixminutes. A random sample of 28 pizza delivery restaurants is taken and has asample mean delivery time of 36 minutes.Find a 90% confidence interval estimate for the population mean delivery time.Step 4: Construct the confidence interval. (Round to four decimal places.)O (-1.8653, 1.8653)(34.1347,37.8653)(34.1348,37.8654)The confidence interval can not be determine at this point.

Population standard deviation : σ=6 Sample size : n=28 Sample mean : x¯=36 Confidence level :…

Answered: g Exercise 3: Suppose average pizza…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A sample of size n = 36 is drawn from a population whose standard deviation is σ = 15.6. The sample mean is x = 94.5. Construct a 95% confidence interval.
A random sample of 88 observations produced a mean x=25.8 and a standard deviation s=2.5. a. Find a 95% confidence interval for μ. b. Find a 90% confidence interval for μ. c. Find a 99% confidence interval for μ. a. The 95% confidence interval is (enter your response here,enter your response here).
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
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n=10 b = 0.50 sb = 0.02 α=0.05 find the confidence interval for β.
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